I think Marge goes after the ones Sami loves as revenge at the EJAMI engagement party. She probably aims for EJ and hits Chad instead.

That seems plausible and would make for a good story. However, I thought Chad's last airdate was at the end of October?

I thought that too. Did they actually say that someone would get killed or just about the bloodshed.

Just about bloodshed, AFAIK. And yeah, Casey Deidrick is supposed to air until approximately October 30th, so if Chad is injured at this party it won't be immediately fatal.

Lately it seems like it takes weeks for one day to past. Remember how long Gabi was in the hospital and then sometime after she left they mention AG was only three weeks old? Right now, we're still on the same day Jennifer took JJ home from the police station and he moved out which happened our time at least a week ago.